Covered test tube



FIG. 1 is an exploded perspective view of the covered test tube with the parts disassembled;

FIG. 2 is a side elevation of the covered test tube in an assembled condition;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a bottom plan view of the cover member; and

FIG. 6 is a sectional view of the cover member taken along line 6--6 of FIG. 1. 

The ornamental design for a covered test tube, as shown and described. 